Safety device for elevators



No. 386,565. Patented July 24, 1888.

ZWW

With Lamas UNITED STATES ATENT Trice.

FENELON TRABUE, OF KINSLEY, KANSAS.

SAFETY DEVICE FOR ELEVATORS.

SPECIFICATION forming part of Letters Patent No. 386,565, dated July 24,1888.

Application filed October 3, 1887. Serial No. 251,345. (No model.)

To aZZ whom, it may concern:

Be it known that I, FENELON TRABUE, a citizen of the United States,residing at Kinsley, in the county of Edwards and State of Kansas, haveinvented a new and useful Improvement in Safety Devices for Elevators,of which the following is a specification.

This invention relates to safety devices for elevators; and it consistsin the improved construction,hereinafter described and explained,whereby any diminution of the tension of the suspending-rope willoccasion the ready application of the safety devices.

In the accompanying drawings, forming part of this specification, Figure1 is a vertical sectional elevation of an elevator-shaft and cartherein, showing the normal position of the safety appliances. Fig. 2 isa like view showing the position of the parts when said appliances arethrown into operation. Fig. 3 is a detail view of the bolt G.

The elevator-shaft is provided at its respective corners with the usualvertical racks, A, to engage the stop devices of the elevator.

B refers to the frame of the car,which may be of any improvedconstruction, but is provided on two opposite sides with the safetydevices. The top beams, a, of the car-frame are provided withguideplates I), which retain and guide the vertical portions 0 of aninverted-U-shaped metal frame, 0, the lower ends of which extend down tothe bottom of the ear, and are guided thereat by means of metalprojections d, which extend through vertical slots 0 in said lower ends.One of these metal frames is provided on each of the opposite sides ofthe car, although only one of them is seen in the drawings, for thereason that one of them hid by the one directly in front of it. Theupper portions of each of said frames are curved, as illustrated in thedrawings, and said curved portions are conneeted by the crossbar F, towhich the suspendingcable is attached.

It will be noticed that each of the vertical portions of the metalframes 0 is provided on its inner side with a projecting lug, f, againstwhich bears the free end of a leaf-spring, m, centrally secured to theunder side of each of the beams a. The vertical portions of each of themetal frames 0 are each provided immediately above their slottedportions with two oppositely-extending offsets, g h, which arerespectively arranged on opposite sides of each portion. Each offset isprovided with an inclined face, the face of the inner offset incliningdownward, While that of the outer offset extends in a reverse direction.

Two extended recesses, 6 are formed on each side of the elevator-ear andon a horizontal line with each other, and within each of these recessesplays a horizontal bolt, G, which in itself is recessed, as at 0, forthe ad jacent vertical portion of the metal frame to rest in. Therecessing of the bolt leaves a front and rear portion projecting fromthe outer side of said bolt, and the front portion normally lies incontact with the upwardly-inclined face of the outer offset. Aspring-lever, k, is pivoted upon the side of the car adjacent to eachvertical portion of the metal frame, and the lower end of said leverextends down into a recess, 19, formed in the rear projecting portion ofthe bolt below. A second lever, n, is pivoted on said side of the car,but nearer to the vertical portion, and the lower part of said lever-armis provided with an enlargement, l, which has an outer inclined facecontacting with the upper offset of the adjacent portion of the metalframe, while its inner side is provided with a projection which bearsagainst the adjacent spring-lever.

In operation the tension of the rope, combined with the weight of thecar, will cause the metal frames to be drawn upward, so that their upperinclined shoulders will operate the intermediate devices to hold thebelts in a retracted position. Should the cable break, the release ofthe metal frames should permit the spring m to throw the verticalportions of said metal frames downward relative to the said car, andthus cause the faces of the outer offsets to force the bolts intoengagement with the racks, as will be readily understood. It will beseen that the movements of the metal frames are rendered certain andpositive by reason of the fact that their vertical portions are properlyguided, both above and below.

By the improvements herein explained the breaking of the suspending-ropewill occasion the instantaneous application of the safetycatehes, sothat the car can acquire no more 2' assess momentum, which mightotherwise break or wrench the safety appliances before they couldsecurely engage the racks.

It will be understood, of course, that it is not necessary for thesuspending-rope to break in order to operate my device, as should therope become entangled in such a way as to release its tension, andconsequently fail to support the car, the springs m will at once forcethe frames downward, thereby projecting the bolts.

I claim 1. The combination, with the racks and the elevated car, of thebolts located on the sides of the car and adapted to engage the racks,the vertically-movable frames mounted on the sides of the car and havingoffsets on their lower portions acting on the bolts to project the same,and levers acted upon by the frames to withdraw the bolts, substantiallyas set forth.

2. The combination, with the car and the racks, of the bolts located inthe sides of the car to engage the racks, the vertically-movable frameshaving oppositely-inclined oflsets on their lower port-ions to actuatethe bolts and having the studs f on their upper portions, and theleaf-springs secured to the upper portion of the car and bearing on thestuds f to depress the frames on the release of the ropetension, as setforth.

3. The combination, with the racks and the car, of the bolts located inthe sides of the car to engage the racks, the projections 11 on thelower portion of the car, the guides bat the upper portion thereof, theinverted- U-shaped frames moving through the guides b and having slots6, engaging the projections d, the said frames engaging the bolts, andsprings at the upper portion of the car to depress the said frames uponthe release of the tension of the rope, as set forth.

4. The combination, with the racks and the car having horizontalrecesses in its sides, of

the vertically-movable frames mounted on the sides of the car andconnected to the suspending-rope and having oppositely-inclined offsetson their lower portions, and the bolts located in the recesses in thesides of the car, the said bolts being projected and withdrawn by theaction of the offsets on the verticallymovable frames, substantially asset forth.

5. The combination, with the car and racks, of the inverted- U shapedframes movable vertically on the sides of the car, the bolts located onthe sides of the car and actuated by said frames to engage said racksand having re- ,ces'sesp in their inner portions, and the springlevershavings their upper ends secured to the sides of the car and their lowerends engaging the recesses p, substantially as set forth.

6. The combination, with the car and the racks, of the bolts located onthe sides of the car to engage the racks, the vertically-movable framesmounted on the sides of the car and having inclined offsets g to actuatethe bolts, and spring-levers having their upper ends secured to thesides of the car above the bolts and having their lower endse'ngagingthe bolts, as set forth.

7. The combination, with the car and the racks, of the bolts located inthe sides of the car and adapted to engage said racks, thevertically-movable frames mounted on the sides of the car and engagingthe bolts, the springlevers mounted on the sides of the car and engagingthe bolts, and the levers n, mounted on the ear between thespring-levers and the vertically-movable frames,substantiall y as andfor the purposes specified.

In testimony that I elai m the foregoing as my own I have hereto affixedmy signature in presence of two witnesses.

FENELON TRABUE.

Witnesses:

T. A. SMITH, WM. PLAG.

